Os(CO)2(η2-SC5H4N(O))(η2-SC5H4N): structural evidence for the transformation of pyridine-2-thione N-oxide to pyridine-2-thiolate in osmium complexes

Reaction of Os3(CO)12 with an excess of 1-hydroxypyridine-2-thione and Me3NO leads to the formation of three monomeric osmium complexes. The unique structure of 2 provides an evidence for elucidating the pathway of this transformation, which was further supported by NMR and ESI-MS studies.